Cadillac Repair: 1995 cadillac seville sls, cadillac seville, trans fluid

Question
We had a code PO80 come up.We went through the procedures to clear it. It did not work. It said if it did not go to history it said refer 'Notes on Fault Tree'. What does tis mean? Also,how do I clear old history messages like"change transmission fluid"

Answer
P080 = You did not complete the THROTTLE POSITION/IDLE LEARN PROCEDURE. E-mail: onlineautohelp@msn.com for the procedure.

What part or parts or work of anykind have you performed on the vehicle ?.

To clear the trans fluid message

Simultaneously push and hold the OFF and DEFOG buttons on your climate control panel for 5 to 20 seconds until you see TRANS FLUID RESET and then release the buttons.